Product Overview

®
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Z-DENS is certified for use with condensing gas
and oil fired heating appliances having flue gas
temperatures up to 230°F (110°C).
Specifications
• Specially developed, fire retardant polypropylene
• ULC S636 certified for flue temperatures up to 230°F (110°C)
• Resistant up to a max flue temperature of 248°F (120°C)
• Cat II, IV Special Gas Vent
• Gas Vent BH, Class IIc
• Suitable for use with negative and positive pressure appliances
• Pressure tested to 20 inches W.C. (5000 pa, level H1)
• Available in appliance white finish in diameters 2” and 3”*
*UV stabilized parts available
• Available in UV stabilized grey finish in diameters 4”, 5”, 6” and 8”
Significant Advantages
• Vent system made from fire retardant polypropylene
• Long lasting and easy to install as no cure time is required
• Greater resistance to acidic flue gas condensate
• No leaching of chloride, as found in PVC and CPVC reducing
boiler contaminates
• No primer or glue containing VOC’s
• Environmentally friendly
• Recyclable an LEED compliant
• Non-toxic smoke or fumes if burned, compared to PVC and
CPVC
Safety
All polypropylene material expands and contracts with temperature
change. To ensure that the installation initially is and remains
completely flue gas tight, it is necessary that the Z-DENS locking
clamps and brackets are used. For the correct installation of the
locking clamp and bracket, follow the instructions in the installation
manual (download at www.z-flex.com). Only by following these
instructions can Z-DENS guarantee a safe and flue gas tight
installation. Use only Z-DENS lubricant when installing Z-DENS
polypropylene to ensure a quick, reliable and safe connection.
Environment
During the production of polypropylene flue gas systems less CO
2
is produced than with the production of traditional metal flue gas
systems.
Design Considerations
Greater system efficiencies and a more aesthetically pleasing
installation can also be achieved by using Z-DENS Concentric.
Z-DENS Single Wall
Approved polypropylene vent manufacturers
Supplier Model
Z-Flex U.S. Inc.
20 Commerce Park N,
Bedford, NH, 03110
Ph. 800-654-5600
Z-DENS Single Wall,
Flexible, Concentric
Specication